Creating an ESD (Or Lightning!) Detector! -- Episode 669

Clem builds a custom ESD detector to identify electrostatic discharge events that can interfere with electronic circuits and cause unexpected glitches. Based on a proven design by Charles Wenzel, the detector outputs a logic-safe pulse that can trigger test equipment like oscilloscopes, helping correlate ESD with system faults. The video covers circuit design, case integration using EMI-shielded enclosures, and real-world testing scenarios. Download the design files and see how you can build your own low-cost debugging tool.

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Creating an ESD (Or Lightning!) Detector! -- Episode 669

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Understanding the ESD Detector

Electrostatic discharge (ESD) is a common issue in electronics, capable of causing unexpected glitches or disruptions in circuits. In his latest project, Clem shares a practical approach to addressing this challenge by building a custom ESD detector. The device helps identify and correlate ESD events, such as static discharges or motor firings, with system anomalies, making it a valuable tool for debugging.
Understanding the ESD Detector

The Circuit Design

The ESD detector Clem built is designed to monitor for electrostatic discharge events and output a signal when one occurs. This signal can trigger test equipment like oscilloscopes, allowing users to observe the exact behaviour of a system during an ESD event. This functionality is especially useful for identifying issues in systems where timing and signal behaviour are critical.
The Circuit Design

Clem based his ESD detector on a design by Charles Wenzel of Techlib.com. Wenzel’s circuit is known for its sensitivity and reliability, which makes it a strong foundation for detecting subtle ESD events. Clem obtained permission from Wenzel to adapt and use the design, emphasising the importance of adhering to licensing terms and respecting intellectual property. This step ensures ethical practices and fosters collaboration within the electronics community.
Demonstrating the Detector

Demonstrating the Detector

In his video, Clem tests the ESD detector in several scenarios, demonstrating its utility in real-world applications. Examples include:

Detecting static discharges from common sources.
Monitoring motor firings to identify noise-induced disruptions.
Capturing the precise timing of glitches that align with ESD events.

These demonstrations show how the detector can help isolate and address problems that might otherwise remain un-diagnosed.
Importance of Licensing and Attribution

Importance of Licensing and Attribution

Clem also discusses the broader implications of using existing designs and materials in DIY projects. By seeking permission to use Wenzel’s circuit and crediting the original creator, Clem reinforces the importance of following licensing requirements. This practice not only respects the work of others but also contributes to a more collaborative and innovative community.
Why Build an ESD Detector?

Why Build an ESD Detector?

For those working with electronics, ESD-related issues can be difficult to identify and resolve. An ESD detector provides a straightforward way to monitor and analyse these events, making it a useful tool for debugging complex systems. Clem’s project offers a clear, practical solution to a common problem, along with insights into the importance of responsible project development.

Watch the Full Build

For a detailed walk-through and demonstration, watch Clem’s video to learn more about building and using an ESD detector in your own projects.

Supporting Files and Links

• Wenzel Detector Original Circuit
• New Lightning Dietector by Charles Wenzel
•  Supporting files for Episode 669 of element14 presents 

Bill of Materials

element14 presents  |  About Clem  |  Project Videos